The Fern Gazette Volume 20 Part 2

Published 21st December 2015
The Review and Main Articles will be available free of charge 2 years after the publication date. Until then they can be purchased for £10.00 each, payment by PayPal. Upon payment you will receive an email with a link to download the article


Edited by M. Gibby & A. Leonard


MAIN ARTICLES

Two new Diplazium (Woodsiaceae) species from East Malesia
P. Hovenkamp pg(s) 49-54
ABSTRACT
Two new species of Diplazium are described from Indonesia: D. walkeri Hovenk. from Sulawesi, and D. murkele Hovenk. from Seram.
FGV20P2M1: Two new <em>Diplazium</em> (Woodsiaceae) species from East Malesia
FGV20P2M1: Two new Diplazium (Woodsiaceae) species from East Malesia
by P. Hovenkamp
pages 49-54
£10.00

Effect of temperature on the viability, lifespan and vigour, of chlorophyllous spores of Osmundastrum cinnamomeum (Osmundaceae)
Y.L. Chang, M.H. Tseng, W.L. Chiou & Y.M. Huang pg(s) 55-64
ABSTRACT
Short-lived chlorophyllous spores need special treatment to extend their longevity and vigour for ex situ conservation. Germination rates, mean longevity and germination times of chlorophyllous spores of the rare fern Osmundastrum cinnamomeum were determined to assess their viability, lifespan and vigour at 18–25°C (room temperature, RT), 4°C and -80°C during 96 weeks of storage. Results showed that at the low temperatures, the viability and vigour were significantly maintained, and the lifespan of O. cinnamomeum spores was extended. Spores stored at RT had completely lost all ability to germinate within 12 weeks. Some spores retained their viability for more than 96 weeks at 4°C and -80°C. Mean longevities were 6.1, 41.8, and >96 weeks with storage at RT, 4°C and -80°C respectively. The mean spore germination time (MGT), herein regarded as an indicator of vigour, was affected by both storage temperature and time. Spores stored at RT and 4°C began to lose their vigour after three weeks. However, it did not decline at -80°C until 24 weeks of storage. This study demonstrates that low temperature (4°C) and cryopreservation (-80°C) significantly extended the longevity and vigour of chlorophyllous spores of O. cinnamomeum.
FGV20P2M2: Effect of temperature on the viability, lifespan and vigour, of chlorophyllous spores of <em>Osmundastrum cinnamomeum</em> (Osmundaceae)
FGV20P2M2: Effect of temperature on the viability, lifespan and vigour, of chlorophyllous spores of Osmundastrum cinnamomeum (Osmundaceae)
Y.L. Chang, M.H. Tseng, W.L. Chiou & Y.M. Huang
pages 55-64
£10.00

Pleopeltis ×cerro-altoensis (Polypodiaceae), a new fern hybrid from Robinson Crusoe Island (Juan Fernandez Archipelago, Chile)
P. Danton, M. Boudrie, A. Bizot & R.L.L. Viane pg(s) 65-78
ABSTRACT
A fern hybrid of the genus Pleopeltis was discovered on Robinson Crusoe Island in the Juan Fernández Archipelago, off the coast of Chile, and is described as P. ×cerro-altoensis. Its putative parents are P. macrocarpa and P. masafuerae, two species present in the archipelago.
FGV20P2M3: <em>Pleopeltis ×cerro-altoensis</em> (Polypodiaceae), a new fern hybrid from Robinson Crusoe Island (Juan Fernandez Archipelago, Chile)
FGV20P2M3: Pleopeltis ×cerro-altoensis (Polypodiaceae), a new fern hybrid from Robinson Crusoe Island (Juan Fernandez Archipelago, Chile)
by P. Danton, M. Boudrie, A. Bizot & R.L.L. Viane
pages 65-78
£10.00

A contribution to the phylogeny of Dryopteris remota by genotyping of a fragment of the nuclear PgiC gene
W. Bujnoch pg(s) 79-89
ABSTRACT
Since its discovery by A. Braun in 1834, there has been speculation on the origins of Dryopteris remota. The present contribution suggests that none of the previous assumptions are correct. Dryopteris remota is triploid and of hybrid derivation. Its parental species are the sexual allotetraploid D. carthusiana and an as yet unidentified sexual diploid species, most likely identical with the unknown parent of the apomictic diploid D. affinis. These assertions are based on comparison of traits, including habit, apomixis, colour of insertions of pinnae of the species under examination, and fragment length variation of the nuclear PgiC gene.
FGV20P2M4: A contribution to the phylogeny of <em>Dryopteris remota</em> by genotyping of a fragment of the nuclear PgiC gene
FGV20P2M4: A contribution to the phylogeny of Dryopteris remota by genotyping of a fragment of the nuclear PgiC gene
by W. Bujnoch
pages 79-89
£10.00

SHORT NOTES

Nomenclatural note on Hemionitis arifolia (Pteridaceae)
J. Mazumdar pg(s) 91-94

Confirmation of Loxogramme lankokiensis (Polypodiaceae) in India
J. Mazumdar pg(s) 95-97

Three new combinations in Ctenopterella (Polypodiaceae
B. S. Parris pg(s) 98

BOOK REVIEW

Farne als Lebensleidenschaft – Festschrift für H. Wilfried Bennert anlässlich seines 65.Geburtstages
M. Gibby pg(s) 99

The website of the British Pteridological Society